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Finding the Fourth Proportional to 276,218.60, 414,327.90 and 143,139.65

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Solution

The fourth proportional to 276,218.60, 414,327.90 and 143,139.65 is: 214,709.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,218.60 : 414,327.90 = 143,139.65 : x
  2. Step 2: Convert to fraction form
    276,218.60/414,327.90 = 143,139.65/x
  3. Step 3: Cross multiply
    276,218.60x = 414,327.90 × 143,139.65
  4. Step 4: Simplify right side
    276,218.60x = 59,306,750,591.24
  5. Step 5: Solve for x
    x = 59,306,750,591.24/276,218.60
  6. Step 6: Final answer
    x = 214,709.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.